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That’s why dial tone was such an improvement. It’s amazingly recent too. One of my teacher’s mother was on the team at Bell Labs that invented it.
by rietta 7y ago
That’s why dial tone was such an improvement. It’s amazingly recent too. One of my teacher’s mother was on the team at Bell Labs that invented it.
- ghaff 7y agoI assume you mean touch tone. And even after it was invented, it took quite a while to fully roll out. I remember in the early 80s having a push button phone that had to be set to pulse dial in order to use it where I was living.